In Buddhism, "Identity View" is at the top of the list of fetters ("clinging-khandhas"). It is attachment to the idea of being a self. "Identity view" is a specific kind of attachment and it is a source of distress:
Grasping onto the “I”, which is a cause of suffering, increases because of the delusion with regard to the self. http://www.shantideva.net/guide_ch9.htm
Identity view is identifying with one's mental formations (pañcakkhandha) or "fabrications." These would include ideas and beliefs I may have picked up in the course of a lifetime that I now believe are "me."
Insecurities arise in connection with a very temporary causal chain that gives rise to the idea of self. It shouldn't take much insight to realize that it's all very flimsy and barely hanging together. The insecurities are probably a natural part of dukkha.
There are different responses to the situation. One response is to try to protect the mental formations (pañcakkhandha) or "fabrications" by eliminating all threats to it. Terms like doctrinal defensiveness or cognitive rigidity comes to mind. But the response would also have an emotional component that includes anxiety and hostility. These emotions have motivational consequences in terms of mobilizing active attempts to diminish or destroy all threats to the jerry rigged self system.
The situation is self-perpetuating because the person then thinks (1) that they are a hodgepodge of ideas and views and also (2) that they are the blind defensive process of protecting the hodgepodge they identify with. The analogy is someone who has been impersonating somebody else thinking they have become the person they've been impersonating and then aggressively trying to defend this notion in the face of any and all information that challenges the preferred belief. I would expect it would lead to a paranoid world view.
Originally the Buddha noted these bad mental habits in relation to metaphysical beliefs.
MN 2: Sabbasava Sutta
I think the notions of being "bound by the fetter of views" applies to all kinds of ideas, including social, political and religious ideology. People with pronounced bigotry are likely to have fixed and rigid and highly defended views in various areas.
I think you'll turn up lots more detail if you search on terms like sakkāya-ditthi or "attachment to self." But looking at defensiveness or rigidity and paranoia in connection with bigotry might be interesting.